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Finding the Fourth Proportional to 248.36, 372.95 and 152.78

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Solution

The fourth proportional to 248.36, 372.95 and 152.78 is: 229.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.36 : 372.95 = 152.78 : x
  2. Step 2: Convert to fraction form
    248.36/372.95 = 152.78/x
  3. Step 3: Cross multiply
    248.36x = 372.95 × 152.78
  4. Step 4: Simplify right side
    248.36x = 56,978.54
  5. Step 5: Solve for x
    x = 56,978.54/248.36
  6. Step 6: Final answer
    x = 229.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.